Method

Heat oil in a large deep saucepan over medium heat. Cook onions and spices for about 10 minutes or until onions are soft. Add tomatoes, apple vinegar, sugar and salt. Stir until sugar dissolves and mixture boils.

Simmer for 1 – 1 ½ hours or until mixture thickens slightly.

Combine flour with 2 tbs of water in a small bowl and add to mixture. Stir until well combined and simmer for another 15 minutes.